addEvent = function (o, e, f, s) {
    var r = o[r = "_" + (e = "on" + e)] = o[r] || (o[e] ? [[o[e], o]] : []), a, c, d;
    r[r.length] = [f, s || o], o[e] = function (e) {
        try {
            (e = e || event).preventDefault || (e.preventDefault = function () { e.returnValue = false; });
            e.stopPropagation || (e.stopPropagation = function () { e.cancelBubble = true; });
            e.target || (e.target = e.srcElement || null);
            e.key = (e.which + 1 || e.keyCode + 1) - 1 || 0;
        } catch (f) { }
        for (d = 1, f = r.length; f; r[--f] && (a = r[f][0], o = r[f][1], a.call ? c = a.call(o, e) : (o._ = a, c = o._(e), o._ = null), d &= c !== false));
        return e = null, !!d;
    }
};

removeEvent = function (o, e, f, s) {
    for (var i = (e = o["_on" + e] || []).length; i; )
        if (e[--i] && e[i][0] == f && (s || o) == e[i][1])
            return delete e[i];
    return false;
};

function formataMoeda(o, n, dig, dec) {
    o.c = !isNaN(n) ? Math.abs(n) : 2;
    o.dec = typeof dec != "string" ? "," : dec, o.dig = typeof dig != "string" ? "." : dig;
    addEvent(o, "keypress", function (e) {
        if (e.key > 47 && e.key < 58) {
            var o, s, l = (s = ((o = this).value.replace(/^0+/g, "") + String.fromCharCode(e.key)).replace(/\D/g, "")).length, n;
            if (o.maxLength + 1 && l >= o.maxLength) return false;
            l <= (n = o.c) && (s = new Array(n - l + 2).join("0") + s);
            for (var i = (l = (s = s.split("")).length) - n; (i -= 3) > 0; s[i - 1] += o.dig);
            n && n < l && (s[l - ++n] += o.dec);
            o.value = s.join("");
        }
        e.key > 30 && e.preventDefault();
    });
}
